This study measured concentrations of formaldehyde, a pollutant in the indoor air in three departments, before and after the renovation of a medical facility used by the general public, and conducted a health survey on workers' subjective symptoms. The average concentration of formaldehyde was 25.8 ± 8.7 μg/m3 before the renovation and 47.3 ± 6.7 μg/m3 after the renovation. The concentration was increased; however, it did not exceed the maintenance standard set by the law. Measured concentration was high both before and after the renovation in the office, and the biggest difference was shown in the concentration change. For eight symptoms including dry throat, there were more workers who expressed the symptoms after the renovation than those who expressed them before the renovation. Factors that influenced subjective symptoms were the effects before and after the renovation. Even when formaldehyde does not exceed the maintenance standard set by the law, detailed and systematic management is required and adequate health effect evaluation or education is necessary, considering the characteristics of medical facilities.

1. 서 론
 2. 연구 방법
  2.1 연구대상
  2.2 설문조사
  2.3 측정 및 분석
  2.4 통계분석
 3. 연구결과
  3.1 리노베이션 전후의 실내 환경 변화
  3.2 설문조사 결과
 4. 고 찰
 5. 결 론
 References

• 김홍관(인하대학교 대학원 환경안전융합전공, Program in ET&ST Convergence, Inha University Graduate School) | Hong-Kwan Kim
• 천영우(인하대학교 대학원 환경안전융합전공, Program in ET&ST Convergence, Inha University Graduate School) | Young-Woo Chon
• 김치년(연세대학교 보건대학원 및 산업보건연구소, Institute for Occupational Health & Graduate School of Public Health, Yonsei University) | Chi-Nyon Kim
• 이익모(인하대학교 화학과, Department of chemistry, Inha University) | Ik-Mo Lee Corresponding author